How add record to IEnumerable(Of Type) object?

[Ronald S. Cook]

I'm used to my class returning records -- let's say employee records -- in a
DataSet (ok, so DataTable within a DataSet technically).

But now, my class is returning those records as IEnumerable(Of Employee).

While I can still just as easily bind this to a ComboBox, ListBox,
DataGridView, etc., I'm not understanding how to add records to it.

If I try to add a record to, say, the ListBox, it will tell me it can't
because the control is bound.

So, how can I add records to ultimately the IEnumerable(Of Employee) object?

Thanks,
Ron

 

[Jon Skeet [C# MVP]]

I'm used to my class returning records -- let's say employee records -- in a
DataSet (ok, so DataTable within a DataSet technically).

But now, my class is returning those records as IEnumerable(Of Employee).

While I can still just as easily bind this to a ComboBox, ListBox,
DataGridView, etc., I'm not understanding how to add records to it.

If I try to add a record to, say, the ListBox, it will tell me it can't
because the control is bound.

So, how can I add records to ultimately the IEnumerable(Of Employee) object?

You can't, without casting to something which directly supports
addition. Bear in mind that IEnumerable(Of Employee) may be:

1) Implemented by an array of fixed size
2) Read-only
3) Generated dynamically with no concept of addition